“On the Fervor of Francis’ Love” (from The Life of Francis) by Bonaventure

Note the phrase "that he might be aroused to divine love from all reality": how does it fit into the Bonaventurian vision?

What is implied in Bonaventure’s claim that “in beautiful things [Francis] saw the most beautiful”?  How does this fit into the vision of Bonaventure?  How does this help us understand what we are supposed to consider in this step?